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Bernadette Benz waited for a day with hoar frost before taking her picture called Frosted Silver Birch which won the Trees, Woods and Forests category.

"This bear came in the early hours of the morning, so it was really hoar frost and covered," she said.

There was hoar frost last night, and all of the bare branches are coated white and sparkling.

After all, the Japanese poem style lends itself to spare reflections on nature, crystalline musings on blossoms, songbirds or hoar frost.

But do you know your hoar frost from your rime?